String

Text is where ComfyUI gets sloppy. A prompt box gives you a string, a filename node wants a string, a metadata writer wants a string - and then someone wires an integer into the middle of it and the graph silently does the wrong thing. ZeugStr is the boring fix: a multiline text input that only ever outputs a string.

What it is

ZeugStr lives in the zeug → Values menu. Its one input, value, is a STRING with a multiline widget (default empty), and its output is a typed string. Type a prompt, a filename base, a style tag, whatever - it comes out the other end unchanged. The node's string_value function is a straight pass-through; the entire personality is in the type contract.

When you'd reach for it

Anywhere you want a shared text value that several nodes read from, or a text input that's guaranteed to be text. Examples:

• One ZeugStr holding your base prompt, feeding the positive conditioning, a metadata saver, and a filename builder at once.
• A filename prefix that you can edit in one place instead of inside a save node's cramped widget.
• Any spot where you're building strings from parts and want a clean anchor before you start joining.

It pairs naturally with the pack's conversion and transform nodes: take ZeugStr output, run it through ZeugJoinStr or ZeugSplitStrList, and you've got a tiny text pipeline without installing a dedicated text-suite pack. For beginners, that's the real selling point - you get string handling without adopting a 200-node dependency.

How it works

Pass-through, full stop. The multiline flag is the one meaningful setting: unlike the single-line convert nodes, ZeugStr gives you a proper text area so you can paste in a long prompt or a chunk of tags and keep them readable. Whatever's in the box is what flows out.

How to install it

It ships in the comfyui-zeug pack (German for "gear" or "stuff"), a small GPL-3.0 collection by Adrian Schubek:

• ComfyUI Manager: search zeug in the Custom Nodes Manager, install ComfyUI-Zeug.
• Manual:

cd ComfyUI/custom_nodes
git clone https://github.com/adrianschubek/comfyui-zeug

Restart ComfyUI after. Zero dependencies, no model files, nothing to download - just a folder in custom_nodes and a restart. Given how many ComfyUI installs turn into dependency marathons, that's a genuine comfort.

Common issues

The one thing that trips people up is wiring this into a node that expects a non-string type. ZeugStr is aggressively a string - feed it into an INT or FLOAT input and the connection will fail or behave oddly. That's not a bug; it's the type discipline doing its job. If you have text that's actually a number (say, "512" out of a text field), run it through ZeugStrToInt or ZeugStrToFloat to convert deliberately instead of hoping ComfyUI reads your mind.

Otherwise there's nothing to troubleshoot. It's a text box. The hardest part of using it is remembering it exists.